3.14×9.9+31.4简便计算?
发布网友
发布时间:2024-10-04 21:23
我来回答
共4个回答
热心网友
时间:2024-10-18 01:28
3.14×9.9+31.4
=3.14×0.99×10+31.4
=31.4×0.99+31.4
=31.4×(0.99+1)
=31.4×(2-0.01)
=31.4×2-31.4×0.01
=62.8-0.314
=62.486
热心网友
时间:2024-10-18 01:27
你好,计算过程如下:
3.14×9.9+31.4
=3.14×9.9+3.14×10
=3.14×(9.9+10)
=3.14×(10+10-0.1)
=3.14×10+3.14×10-3.14×0.1
=31.4+31.4-0.314
=62.8-0.314
=62.486
希望能够帮到您。
热心网友
时间:2024-10-18 01:26
你好,3.14×9.9+31.4
=3.14×9.9+3.14×10
=3.14×(20-0.1)
=62.8-0.314
=62.486
满意请采纳谢谢!
热心网友
时间:2024-10-18 01:29
解:3.14*9.9+31.4
=3.14(10-0.1)+31.4
=31.4-0.314+31.4
=62.8-0.314
=62.486